in ‧ ter ‧ mit ‧ tent /ˌɪntəˈmɪt ə nt◂ $ -tər-/ BrE AmE adjective
[ Date: 1500-1600 ; Language: Latin ; Origin: present participle of intermittere , from mittere 'to send' ]
stopping and starting often and for short periods SYN sporadic :
The weather forecast is for sun, with intermittent showers.
—intermittently adverb